Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
39400 (6808 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2039400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1274120897821898 3.7549e-08  
a 3.107520585321641 2.4802e-08 au
q 2.711584893504638 1.2136e-07 au
i 5.221245159077567 6.1556e-06 deg
node 24.30857508180347 4.5334e-05 deg
peri 247.1230512636084 5.2345e-05 deg
M 28.38115776004442 2.4422e-05 deg
tp 2458842.758104487205
(2019-Dec-25.25810449)
0.00013592 TDB
period 2000.872651663012
5.48
2.3954e-05
6.558e-08
d
yr
n .1799214956038249 2.154e-09 deg/d
Q 3.503456277138645 2.7962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      719  
   data-arc span      21467 days (58.77 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59456  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:12:07  

Additional Information
 Earth MOID = 1.70109 au 
 Jupiter MOID = 1.62149 au 
 T_jup = 3.201 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO351107  
diameter diameter 5.688 km 1.320 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.087   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

39400 (6808 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 6808 P-L = 1999 TP75 = 1999 TU226 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-06 02:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin